Vehicle having brakes



L. BLCKMQRE VEHICLE HAVING BRAKES Apri@ :.72 w25. 1,532,479

Filed March 8, 1923 use theA same,

' most'eective when ways have a dragfing e Patented Apr. f7, i925."

n rr 'en ,saar

I LLOYDBLCKIBJE, OF HGHLAND FARE, MCHIGAN, ASSIGNCR l DETROIT, MICHGAN,A

CORPOBA'TXON, OF

TO GENERAL MOTORS CORPORATION OF DELAWARE.

VEHICLE HAVNG BRAKES.

l V.application iled March E,

To all whom it lmay concern: l Be it known that l', LLOYD Brno-ketone, acitizen of the United States, and acresident of Highland Park, county oflayne, and State of Michigan, have invented certain new and usefulimprovements in Vehicles HavimT -Brakes, of which the following is afull, cear, concise, and exact description, such as will enable othersskilled in the art to which the invention relates to make an referencebeing made therein to the accompanying drawingmwhich Jorm a part of thisspeci cation. I

This invention relates to vehicleshaving brakes, and is illustratedasembodicd in an automobile having' iront 'and rear 1afllee brakesoperated by a single controlling member such as the usual brake pedal.

An obiect ci the invention is to provide an arrangement of a pluralityof brakes, such -as the four-Wheel brakes sho-Wn inthe draiyinfrs, sothat diderent brakes will operate 1n a ider'ent manner according to thedirection of movement of the vehicle so that some brakes will be mosteective when the vehicle is moving forward and different brakes will bethe most eective wheny the vehicle is moving in a rearward direction. lnthe present instance this arrangement is for the urpose of guardingagainst skidding, and to prevent loss of control of the vehicle, byarranging the brakes so that in either direction of movement that set ofbrakes will be most edective which is rearmost having r'egard to thedirection of movement of the vehicle.

According to the preferred arrangement, the rontwheel brakes arearranged to be the vehicle is moving in a rearward direction and therear Wheel brakes are arranged to be most eicctive when the vehicle ismoving in a forwar irection. By this arrangement the brakes alg cct withrespect to the center of gravity of the vehicle, prevent-A ing thetendency to when, for exampl the iront wheels are braked more stronglythan tlieprear Wheels when the car is moving rapidly in a forwarddirection. In the illustrated embodiment of the invention the brakes areof what is known as the wrapping type, comprising exansible andcontractable bands which is anchored at one end and arranged to engagean operating device at the opposite skid which takes place 1923. SerialNo. 623,7li9.

end. t will be observed that in the dr'aw ings, the anchored ends of theiront wheel bands are arranged countcrclockwise with respect to theoperating devices, while the anchored ends'oi' the rear wheel brakesare' dcthe arranged clockwise from the operating vices, the vehicle'being viewed lWith iront wheels atthe lett, thus securing the abovedescribed braking eilect which reverses when the direction of movementof the vehicle is reversed. i

The above and other objects and features of the invention, includingvarious nove combinations and desirable particular constructions ofparts, will nc apparent from the following description ci theillustrative embodiment of the invention shown in the accompanying rravvings, in which:

Figure 1 is a diagrammatic `longitudinal vertical section of anantomobilejust'in side the Wheels on the inner side; an

Figures 2 and 3 are respectively large scale views et a iront and a rearWheel brake from the same point of view as inv Figure 1 but on a largerscale.

The vehicle shown in Figure 1 comprises a chassis frame 10 supported bysprings (not shown) on front and rear axles carrier by ieels 12 and rearwheels 14.

which is arranged an expansible and contractable band 18 anchored at 2Oto a plate 22 stationarily mounted on the' steering knuckle for thecorresponding Wheel. The band is controlled by a cam 24 on a rock shaft2G operated by an arm 28 connected by a link 30 to an arm 32 on a rocksha't B4, there being an arm 32 at each end oi' the rock shaft for thetwo rontwhcel. brakes. Rock shaft 34 is operated by an arm 36 connectedby a link 38 to an arm 4.0 on a brake operating shaft 42 having an arm44 connected by a link 4G to the brake pedal 48 or an equivalentOperating mc|nber.

Each rear Wheel is provided with a drum 5() inside of which is arrangedan expansible and contractable band 52 anchored at o4:

braking force is always behind the two rear wheel brakes. Rock shaft 70is operated by anarin 72 connectedl by a link 74 to an arm-'Z6 on thebrake operating shaft 42 which is operated by the brake pedal 48 asdescribed above.

t is especially to be noted that, when viewing the car from the point ofView of the drawings, the point 20 at which the front Wheel brake bandis anchored is counterclocliwise from the cam 24 which 'operates thebrake, whereas the point 54 at which the rear wheel brake band isanchored is in a clockwise direction froin'the caInGO which operates thebrake. As the forward direction of movement of the car is toward theleft in these figures, it will be observed that the rear Wheel brakesare 'more elfective than the front Wheel brakes When the car is movingforward and that the front wheel brakes are more effective than the rearwheel Ybrakes when the car is moving backward. This, it will be seen,practically eiiminates any tendency toward skidding, by reason of thefact that the most efective center of gravity of the car, which may beregarded as the point at which the nioinentuni of the car is eifective.Y

While one Villustrative embodiment of 1n invention has been described indetail it is not my intention to limit the scope of the YYYa cani at theother end, the cams being arranged clockwise from the anchored ends(regarding the vehicle with the front Wheels Y on the left), rear wheelbrakes includin VVbands each ot' which is anchored at one en and each ofwhich has a cam at the other end, the cams being arranged counterclock-Wise from the anchored ends, and driver Ycontrolled connect-ions forrocking the cams to apply the brakes.

2. A vehicle having, brakes including bands each of which is anchored atone end and each of which has ranged clockwise from the anchored ends,different brakes including ban-ds each of which is anchored at one endwhich has a earn at the other end, the Canis eing arrangedcounterclockwise from the anchored ends, and driverfcontrolledconnections for rocking` the cams to apply the brakes. Y Y 4' Intestimony whereof I atiix my signature.

LLY BLACKMGRE;

and each 0fin combination,

